UCLA DAVID GEFFEN SCHOOL OF MEDICINE BAP 09 Story Findings | Los Angeles, CA | SOM Architects
When first introduced to the project, we were aware that it was environmentally conscious simply on the basis that it was LEED Platinum Certified. Also, with a cursory glance it was obvious that the building used sun shading, daylighting techniques, and many others that were optimal for the arid environment. However, after our analysis, the depth and variety of strategies used were astounding. The use of a large courtyard, separated building blocks, and narrow floor plates allows for efficient daylighting, while horizontal overhangs at the southern faces and vertical fins at the east and west moderate daylight to create maximum comfort without overheating. Furthermore, 30% of circulation pathways are located on the exterior, which reduces the cooling load and increases clarity. The separation of the building blocks allows for the building to serve as a permeable entrance into the campus of UCLA that engages the Westwood Community. Another technique SOM used were bioswales which reintroduce water to the natural water cycle and a rain catchment system which reduces water waste. Displacement ventilation reduces reliance on active systems, and reflective roofing materials help with passive cooling as well. Structurally, SOM chose a one way concrete slab and column system, mostly due to the high risk occupancy of the building as a hospital. Looking at the mechanical systems, we saw firsthand the value of an offsite plant which allowed for much less square footage being used for the heating and cooling of the building. All that was needed were rooms to receive and distribute hot and cold water, ventilation, and AHU’s that were located on the roofs of the building. The use of a primarily air-based system was essential due once again to the medical programs of the building, which required substantial air movement. Small amounts of radiant heating air used in some areas which do not require extensive air movement to increase thermal comfort more efficiently. The cooperation between the mechanical, structural, and egress systems were also something we were not previously aware of. Pipes traced the major circulation paths, and shear walls provided extra support for major egress areas and ventilation shafts. Overall, we were unaware of how mechanical systems could be mixed and manipulated to better work with the structure of the building and diversified along with the program. This project was also valuable in showing us the real-life application of passive strategies such as sun shading and natural ventilation.
15
